In reply to Twigger:
I've done loads of shunting - Goblin Coombe is really good, Owl Rock, easy to scramble up the gully, plenty of trees to belay off...
Right hand side of Sea Walls is great - you can shunt multiple routes off the same belays, starting with Don't Slip and SOS off the bolt belay station, then move across to a small tree and bolts, do Padansac, Just So and Crucial Pursuit...move across to the big tree and by use of various slings, in situ pegs etc you can shunt Fast Grip, Last Slip, Ffoegs Folly....that lot is my usual circuit, do them twice each for a decent workout...
Upper Wall is great, scramble down from the top, safety rope in place, good bolt belays and get stuck into Arms Race, Mirage, Street Life...
You can get a hell a lot done on shunt, quite quickly, best bit of kit I ever bought...